Internal-combustion rotary motor.



IIIIIIIIIIII I qi l C. CASTRO.

INTERNAL COMBUSTION ROTARY MOTOR. APPLICATION FILED MAR. 22. 1913.

l 1 l 3 l Patent-ed Apr. 4, 1916.

2 SHEETS-SHEET I.

O o o o I) O Q \J mueutoz w-ilt'megoeo MW C; CA-STRO.

INTERNAL COMBUSTION ROTARY MOTOR.

APPLICATION FILED MAR. 22. I913.

Patented Apr. 4, 1916.

2 SHEETS-SHEET 2.

II/IM Z I/II/I/IM %///////////y// use CESAR cnsrno, or new YORK, n. Y.

INTERNAL-COMBUSTION ROTARY MOTOR.

Specification of Letters Patent.

Patented Apr. 4t, 1916.

Application filed March 22, 1913. Serial No. 756,268.

To all whom it may concern Be it known that I, CESAR CAs'rRo, a citizenof Ecuador, residing at New York, New York county, and State of NewYork, have invented and discovered certain new and useful Improvementsin Internal-Combustion Rotary 'Motors, of which the following is aspecification.

My said invention consists in an improved construction of rotaryexplosive engines, or motors, wherein a series of explosions in a seriesof cylinders on a common shaft are arranged to follow each other inrapid succession during the rotation of the motor and serve to maintainthe speed and power of the motor as may be desired, and it consistsfurther in various improvements in the construction and arrangement ofparts, whereby an efficient motor of this character is provided, all aswill be more fully hereinafter described and claimed.

Referring to the accompanying drawings, which are made a part hereof andon which similar reference characters indicate similar parts, Figure 1is a view, partly in front elevation and partly in section, showing al-cylinder motor constructed in accordance with mysaid invention, Fig. 2a view, partly in endelevation and partly in cross section, showing theinterior construction, Fig. 3 a detail view on an enlarged scale showingthe parts adjacent to an explosion chamber on an enlarged scale, andFig. 4 a detail view of one of the sliding cut-ofls.

In said drawings the portions marked A represent the external stationarycasing; B the internal rotary structure; and C the radial pistons.

The external casing A is a heavy casing, of suitable strength for thepurpose, formed with hollow peripheral walls constituting a water jacketsurrounding the various cylinders. A circulation of'water is providedfor by means of suitable water inlets, such as shown at 10, and suitablewater outlets, such as shown at 11. Said casing is of appropriatediameter and of the length to provide for the number of cylindersrequired for an engine of the power desired. In Fig. 1 I have shown fourcylinders, but it will be understood that any number, more or less, maybe provided, according to the requirements.

The rotary structure B is mounted upon the main shaft 13 and consists ofa heavy rim of sufficient strength for the purpose,

supported by spokes 14 from a central hub 15, which is keyed to saidshaft. Said rotary structure B may be a unitary structure extending fromend to end of the motor or englne, or, as will be readily understood, itmay be composed of sections properly joined together and mounted withinthe outer casing A. The joints between said internal rotary structureand stationary external casing are preferably formed by interengaginggrooves and flanges as shown most clearly in Fig. 1. Said connectionsare slidable so that the rotary structure willrotate freely within thestationary structure which is rigidly and securely mounted upon aSuitable base or frame, not shown, as from side supports A. In Fig. 1the intermediate oints are shown as composed of heavy films a havingoverlapping edges, the rims being bolted to the internal structure andoverlapping annular flanges on the sides of the sections of casing A. Itwill be understood, of course, that the particular details ofconstruction may be varied and that, as shown, the structure is merely asuitable form to illustrate the broad idea of the invention comprisingthe relative arrangement and general construction of parts whereby theoperation and result desired are secured.

At intervals, preferably on diametrically opposite sides of said rotarystructure, sliding pistons 16 are mounted in radial grooves or socketstherein, being normally held outward, with their faces bearing againstthe inner face of the casing A, by means of springs 17 which are mountedwithin said pistons and hear at one end against the inner ends of saidsockets and at their outer ends against cross bars forming a part ofsaid pistons. Packing strips 18are mounted in the faces of said pistonsas shown. Extending back from each piston for a distance the surface ofsaid rotary part is formed flat, or extends tangentially to thecircumference, forming for a short distance a wider space between theperiphery of the rotary structure and the interior surface of thecasing. Said casing A is correspondingly formed at points on oppositesides and these portions of the chamber are designed for the explosionchambers, indicated in Figs. 1 and 3by E. An inlet valve 19 leading fromthe carbureter, or mixture supply, is located' at one end of saidexplosion chamber E and a sparker 20 of any appropriate type is locatedin juxtaposition thereto. A sliding cut-ofi plate 21 is mounted in theradial socket with piston 16, on the front side thereof, and is normallyheld extended by springs 22 which are interposed between the inner endsof the legs of said plates and the bottom of said socket. Anothersliding cut-off plate 23 is mounted in the combustion chamber head,adjacent to the explosion chambers, and is also adapted to slide out andin and is held in normal contact with the surface of the rotarystructure B under spring pressure. A spent gas exhaust 25 is providedjust at the end of the working chamber close to the entrance to thecombustion chamber.

I will term each part of the rotary structure serving as one side of apiston chamber and the part of the casing A in which it revolves as a clinder and as before stated, it will be understood that such cylindersmay be as many or as few as required to secure the power desired for themotor. The explosion chambers E are spaced around each cylinder. In thestructure shown there areftwo of such explosion chambers in eachcylinder and four cylinders. The explosion chambers of the differentcylinders are, however, located at different pointspredetermined degreesapart around the circumference of the structure.

In operation, the parts being constructed and assembled as shown anddescribed, and shaft 13 being set in motion, by any cranking mechanism,as in other types of explosiveengines, pistons 21 of the severalcylinders passing along the chambers between rotary structure B and thecasing A will meet the inclined cut-ofi portion 26 of the interior wallsof said casing and be forced inward in a radial direction until theypass under the dividing bridge-wall 27, which is located to be inpractical contact with the periphery of rotary structure B and to cutoff any communication between the explosion chamber and the section ofthe chamber behind said bridge-wall, which is the exhaust end of theworking chamber. Sliding cut-off plate 23 serves to preventcommunication between the two parts at this point. As said rotarystructure B revolves each sliding cut-ofi? plate 21 passes under thebridge-walls 27 of the appropriate cylinders and as soon as they passsaid bridgewalls springs 22 force them outward into contact with theinternal face, of the casing A, and cause a suction, creating a vacuumin the respective explosion chambers behind each plate 21. As soon aspiston C is released it also slides outward into contact with thesurface of casing A, furnishing a solid and substantial inner end to theexplosion chamber of the worm shown in Fig.

2. The sparking mechanism is timed to create a spark when the pistonshall have reached the position substantially as shown the structure anddirecting their force in a uniform direction against their respectivepistons and carrying the rotary structure forward under the power thusgenerated. Two like explosions will take place in the adjacent cylinderat points a predetermined degree from the points at which the firstexplosions take place, and so on throughout the series of cylinderscomprising the motor, so that at each revolution" of the motor as manyexplosions can be provided for as required to generate the power needed.As each piston approaches the succeeding explosion chamber, it forcesthe spent gases ahead of it through the exhaust ports 25, thus keepingthe working chambers clean at all times. The motor may be kept cool by aconstant circulation of water in the water jacket formed in the outercasing, as before described.

It will be understood, of course, that various modifications in thedetails of construction and arrangement of parts may be made withoutdeparting from my invention, which consists, broadly, in the structureof a motor wherein several rotary structures mounted on a single shaftare acted upon successively in chambers arranged in a series to maintaina continuous impulse in a uniform direction. While I show a constructionadapted for two explosions in each chamber, as before stated, this canbe modified as desired,

or found necessary, in order to accomplish the desired result.

Having thus fully described my said invention, what I claim is new anddesire to secure by Letters Patent is:

1. A rotary explosive engine comprising a casing having an annularinternal chamber, a bridge-wall mounted on the casing, a

rotor operable within said chamber, sliding cut-ofi plates mounted onsaid casing and rotor respectively and cooperable therewith to form achamber to receive the explosive mixture, a piston carried by the rotorradially movable into the explosive chamber, and an igniting meanslocated in said explosive chamber, substantially as set forth.

2. A rotary explosive engine comprising a casing having an annularinternal chamber, bridge-walls mounted on the casing, a rotor operablewithin said chamber, sliding cut-off plates mounted on said bridge-wallsoperable to engage the rotor, sliding cut-oil plates mounted on therotor operable to engage the casing, and said sliding plates with tionand a bridge-Wall, and formed with an annular internal chamber, a rotoroperable within said chamber, a cut-off plate slidably mounted in thebridge-wall and operable to engage the rotor, a cut-off plate slidablymounted on the rotor and operable to .en-

gage the casing, said plates with the tangential projecting portion andthe bridge-wall providing a chamber to receive the explosive mixture, apiston carried by the rotor immediately adjacent the rotor sliding plateand radially movable into the explosive chamber, and an ignition meanslocated in said explosive chamber, substantially as set forth.

4. A rotary explosive engine comprising a casing having a plurality ofannular internal chambers, each of said chambers having a diametricallyopposed pair of tangential projecting portions and bridge-walls, rotorsoperable within said chambers respectively, cut-off plates slidablymounted in said bridge-walls and operable to engage the rotors, eut-ofi'plates slidably mounted on the rotors and operable to engage the wallsof the chambers, said plates with the tangential projecting portions andbridgewalls providing chambers -to receive the explosive mixture,pistons carried by the rotors immediately adjacent the rotor sliding'plates and radially movable into the explosive chambers, and anignition means located in each of said explosive chambers, substantiallyas set forth.

5. A rotary explosive engine comprising an external casing having aninternal annular chamber, said chamber being divided into parts bybridge-walls and extending on one side of said bridge-wall tangentiallyto the circumference thereof and on the other side being curved from theinterior face of said bridge-wall to the normal interior face of thecasing, a rotor within said casing, radially-sliding pistons mounted insaid rotor, the surface of said rotor being formed to extendtangentially for a distance back'from each of said pistons,substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Vashington,District of Columbia, this twenty-third day of J anuary, A. D. nineteenhundred and thirteen.

CESAR CASTRO. [L. s.]

Witnesses:

E. W. BRADFORD, A. M. PARKINS.

